Activation tagging of a dominant gibberellin catabolism gene (GA 2-oxidase) from poplar that regulates tree stature1

From: Plant Physiology | Date: July 1, 2003| Author: Busov, Victor B; Meilan, Richard; Pearce, David W; Ma, Caiping; Et al | Copyright information

Received January 10, 2003; returned for revision February 21, 2003; accepted March 20, 2003.

We identified a dwarf transgenic hybrid poplar (Populus tremula X Populus alba) after screening of 627 independent activation-tagged transgenic lines in tissue culture, greenhouse, and field environments. The cause of the phenotype was a hyperactivated gene encoding GA 2-oxidase (GA2ox), the major gibberellin (GA) catabolic enzyme in plants. The mutation resulted from insertion of a strong tran...

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